Severe Thunderstorm Warning 50, NWS Cheyenne, WY

972 
WWUS55 KCYS 140026
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
626 PM MDT THU JUN 13 2013

WYC015-027-140100-
/O.CON.KCYS.SV.W.0050.000000T0000Z-130614T0100Z/
GOSHEN WY-NIOBRARA WY-
626 PM MDT THU JUN 13 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
NIOBRARA AND NORTHEASTERN GOSHEN COUNTIES UNTIL 700 PM MDT...

AT 623 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR RAWHIDE
BUTTES...AND MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...TRAINED WEATHER SPOTTERS. AT 620 PM...QUARTER SIZED HAIL    
         WAS REPORTED WITH THIS STORM 17 MILES SOUTHWEST OF LUSK.


IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
PRAIRIE CENTER AND VAN TASSELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4299 10406 4245 10406 4246 10452 4263 10462
TIME...MOT...LOC 0024Z 233DEG 40KT 4260 10440

HAIL...1.00IN
WIND...60MPH

$$

CLAYCOMB

762 
WWUS55 KCYS 140037
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
637 PM MDT THU JUN 13 2013

WYC015-027-140100-
/O.CON.KCYS.SV.W.0050.000000T0000Z-130614T0100Z/
GOSHEN WY-NIOBRARA WY-
637 PM MDT THU JUN 13 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
NIOBRARA AND NORTHEASTERN GOSHEN COUNTIES UNTIL 700 PM MDT...

AT 634 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES NORTH OF
PRAIRIE CENTER...AND MOVING EAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...TRAINED WEATHER SPOTTERS.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
VAN TASSELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4251 10421 4269 10447 4299 10406 4250 10406
TIME...MOT...LOC 0037Z 249DEG 40KT 4263 10420

HAIL...1.00IN
WIND...60MPH

$$

CLAYCOMB

712 
WWUS55 KCYS 140048
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
648 PM MDT THU JUN 13 2013

WYC015-027-140057-
/O.CAN.KCYS.SV.W.0050.000000T0000Z-130614T0100Z/
GOSHEN WY-NIOBRARA WY-
648 PM MDT THU JUN 13 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NIOBRARA AND
NORTHEASTERN GOSHEN COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED 
AREA.

LAT...LON 4251 10421 4269 10447 4299 10406 4250 10406
TIME...MOT...LOC 0047Z 233DEG 40KT 4275 10412

$$

CLAYCOMB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
532 PM MDT THU JUN 13 2013

.SHORT TERM...(THIS EVENING THROUGH SATURDAY)
ISSUED AT 311 PM MDT THU JUN 13 2013

MAIN FORECAST CHALLENGE AND CONCERN IN THE SHORT TERM IS THE
POTENTIAL FOR THUNDERSTORMS THE REMAINDER OF THIS AFTERNOON AND
EVENING. ISOLATED THUNDERSTORMS HAVE DEVELOPED OVER CARBON COUNTY
THIS AFTERNOON AS EXPECTED. THESE STORMS SHOULD SPREAD NORTHEAST
INTO CONVERSE COUNTY BY LATE THIS AFTERNOON. GENERALLY NOT
EXPECTING SEVERE WEATHER WITH THESE STORMS GIVEN A LACK OF CAPE
BUT GIVEN THEY WILL BE MOVING AT 40 KTS AND INVERTED V
SOUNDINGS...GUST 50 TO 60 MPH ARE A GOOD POSSIBILITY WITH
MICRO BURST NOT OUT OF THE QUESTION.

FARTHER TO THE EAST THE QUESTION IS WHETHER OR NOT STORMS WILL
EVEN BE ABLE TO FORM. SOUTH TO SOUTHEAST FLOW IN THE LOW LEVELS
AND RATHER SUBSTANTIAL MID LEVEL CLOUDS CUT BACK ON EXPECTED SURFACE
HEATING...SUCH THAT THE SURFACE CAP MAY VERY WELL HOLD EAST OF THE
LARAMIE RANGE. WILL HAVE TO KEEP CLOSE WATCH THE REST OF THE
AFTERNOON AS A HIGH SUN ANGLE THIS TIME OF YEAR CAN QUICKLY WARM
THINGS UP AND THERE IS A DECENT AREA OF LOW LEVEL CONVERCENCE
ALONG THE LARAMIE RANGE...BUT MOST LIKELY THE CAP EAST OF THE
LARAMIE RANGE WILL HOLD. OF COURSE SHOULD STORMS DEVELOP AND
BECOMING ROOTED INTO THE BOUNDARY LAYER...SEVERE THUNDERSTORMS
WITH LARGE HAIL AND DAMAGING WINDS WOULD BE LIKELY.

ANOTHER AREA OF CONCERN IS WITH THE CONVECTION FORMING OVER THE
HIGHER TERRAIN IN COLORADO. THIS CONVECTION IS EXPECTED TO SHIFT
NORTHEAST INTO THE PLAINS LATER THIS AFTERNOON. STORMS THAT MOVE
INTO THE PLAINS MAY BE ABLE TO REACH THE SOUTHERN NEBRASKA
PANHANDLE BY THIS EVENING...ALTHOUGH THE BULK OF THE THUNDERSTORM
ACTIVITY SHOULD REMAIN SOUTH OVER NORTHEAST COLORADO. THESE STORMS
COULD BE SEVERE WITH STRONG WINDS AND HAIL...EVEN A TORNADO WOULD
NOT BE OUT OF THE QUESTION. HAIL THREAT WILL BE SOMEWHAT LIMITED
BY 12000 FT AGL FREEZING LEVELS. LOW LEVEL SOUTHEAST FLOW WILL
QUICKLY VEER WITH HEIGHT WITH WESTERLY FLOW ALOFT...SO SHOULD BE
LOOKING AT 50 KTS OF DEEP LAYER SHEAR SUPPORTIVE OF
SUPERCELLS. STORMS SHOULD CONGEAL THIS EVENING...SO MAY BE
DEALING WITH A DEVELOPING MCS WITH EMBEDDED SUPERCELLS FOR
CONVECTIVE MODE.

SHOWER AND THUNDERSTORM THREAT SHOULD END BY MIDNIGHT WITH THE
MAIN UPPER LEVEL LOW WELL NORTH INTO CENTRAL MONTANA...WHILE
CONVECTION OVER THE PLAINS SHIFTS WELL TO THE EAST. THE WAVE OVER
MONTANA WILL DRIVE A COLD FRONT SOUTH AND EAST TONIGHT PUSHING
COOLER STABLE AIR INTO THE FORECAST AREA. THIS WILL GENERALLY SHUT
DOWN THUNDERSTORM CHANCES FRIDAY...ALTHOUGH THE NAM AND GFS
SUGGESTING RETURN FLOW AND ISENTROPIC FORCING NEAR THE COLORADO
BOARD BY FRIDAY EVENING. AN ELEVATED WARM FRONT COULD SPREAD A
FEW SHOWERS AND THUNDERSTORMS NORTH OVER FAR EASTERN WYOMING AND
THE NEBRASKA PANHANDLE FRIDAY EVENING. COULD AGAIN SEE SOME
THUNDERSTORM ACTIVITY IN THE PLAINS SATURDAY.

.LONG TERM...(SATURDAY NIGHT THROUGH THURSDAY)
ISSUED AT 300 PM MDT THU JUN 13 2013

UPPER RIDGE AXIS WILL HOLD TO THE WEST OF THE CWA THROUGH EARLY
NEXT WEEK WITH SEVERAL UPPER IMPULSES LIKELY TO PASS THROUGH THE
RIDGE AND ACROSS THE REGION. THESE SHOULD COMBINE WITH SOME
INSTABILITY TO PRODUCE WIDELY SCATTERED MAINLY LATE DAY SHOWERS
AND STORMS OVER THE PLAINS THROUGH TUESDAY. UPPER RIDGE AXIS WILL
PASS ACROSS MONDAY WITH SW FLOW ALOFT COMING OVER THE AREA BY
WEDNESDAY AND CONTINUING INTO THURSDAY. SFC BOUNDARY SHOULD SHIFT
EAST OVER THE HIGH PLAINS WEDS BRINGING IN SOME DRIER AIR THUS
PCPN CHANCES SHOULD DROP OFF AT THAT TIME. TEMPERATURES SHOULD BE
SEASONAL FOR THE PERIOD.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z FRIDAY AFTERNOON)
ISSUED AT 529 PM MDT THU JUN 13 2013

VFR CONDITIONS EXPECTED. SOME CONCERN FOR THE KSNY AIRPORT AS
LATEST RADAR LOOP SHOWING FAIRLY STRONG TSTMS NEAR AKRON COLORADO
MOVING TOWARDS THE NORTHEAST. ON PRESENT TRACK...TSTMS SHOULD PASS
JUST SOUTH OF KSNY...SO CONTINUED VCTS WORDING IN THEIR FORECAST.
CONVECTION WEST OF THE LARAMIE RANGE SHOULD DIE OFF AT SUNSET WITH
LACK OF DAYTIME HEATING.

&&

.FIRE WEATHER...
ISSUED AT 134 PM MDT THU JUN 13 2013

A FEW THUNDERSTORMS POSSIBLE THROUGH THIS EVENING THEN DRY THROUGH
FRIDAY AFTERNOON. A FEW MORE THUNDERSTORMS POSSIBLE FRIDAY EVENING
OVER FAR SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE BUT CHANCES
FOR WETTING RAIN MINIMAL.

COLD FRONT WILL MOVE ACROSS THE AREA TONIGHT. THIS WILL PUSH COOLER
DRIER AIR OVER SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE.
HUMIDITIES WILL AGAIN PLUMMET WEST OF THE LARAMIE RANGE WITH SINGLE
DIGIT MINIMUMS INTO LOWER ELEVATIONS FRIDAY AFTERNOON. TEENS FOR
MINIMUM RELATIVELY HUMIDITY EAST OF THE LARAMIE RANGE IN SOUTHEAST
WYOMING. LOW HUMIDITY VALUES WILL BE ACCOMPANIED BY GUSTS OF 20 TO
30 MPH FRIDAY AFTERNOON WITH THE STRONGEST WINDS OVER HIGHER
ELEVATIONS. FUELS MAY NOT BE SUPPORTIVE OF EXPLOSIVE FIRE GROWTH
QUITE YET...BUT RECENT WARM DRY WEATHER MAY PUSH CONDITIONS CLOSE
TO CRITICAL. DRY CONDITIONS WILL PERSIST WEST OF THE LARAMIE RANGE
THROUGH THE FORESEEABLE FUTURE WHILE EASTERN AREAS MAY SEE HIGHER
HUMIDITIES AND THUNDERSTORMS SOME DAYS.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...NONE.
NE...NONE.
&&

SHORT TERM...LIEBL
LONG TERM...RE
AVIATION...CLAYCOMB
FIRE WEATHER...LIEBL

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1045 AM MDT THU JUN 13 2013

WYZ101>119-141645-
CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY-
NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS-
SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-
LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
1045 AM MDT THU JUN 13 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING...
SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS ACROSS SOUTHEAST WYOMING
THIS AFTERNOON AND EVENING. SHOULD THUNDERSTORMS DEVELOP ALONG AND
EAST OF THE LARAMIE RANGE...A FEW COULD BECOME SEVERE...CAPABLE OF
PRODUCING LARGE HAIL AND DAMAGING WINDS. WEST OF THE LARAMIE RANGE
SEVERE THUNDERSTORMS ARE GENERALLY NOT EXPECTED ALTHOUGH WIND
GUSTS OF 50 TO 60 MPH WILL BE POSSIBLE WITH SOME STORMS.

STRONG SOUTHWEST WINDS OF 25 TO 35 MPH WITH GUSTS TO 50 MPH CAN BE
EXPECTED WEST OF THE LARAMIE RANGE THIS AFTERNOON. THESE WINDS
COULD BE ENHANCED AT TIMES BY PASSING SHOWERS AND THUNDERSTORMS.
THOSE TRAVELING WITH HIGH PROFILE VEHICLES OR LIGHT TRAILERS
SHOULD USE EXTREME CAUTION ON AREA ROADWAYS...ALLOWING EXTRA TIME
TO REACH THEIR DESTINATION.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EARLY
EVENING.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

NEZ002-003-019>021-054-055-095-096-141645-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-
1045 AM MDT THU JUN 13 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS ACROSS THE WESTERN
NEBRASKA PANHANDLE LATE THIS AFTERNOON AND THIS EVENING. SHOULD
THUNDERSTORMS DEVELOP...SOME COULD PRODUCE LARGE HAIL AND DAMAGING
WINDS...AND ISOLATED TORNADOES MAY BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EARLY
EVENING.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

LIEBL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
132 PM MDT THU JUN 13 2013

WYZ104-109-111-112-132200-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-CENTRAL CARBON COUNTY-
SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE-
INCLUDING THE CITIES OF...MUDDY GAP...RAWLINS...SINCLAIR...
HANNA...BAGGS...DIXON
132 PM MDT THU JUN 13 2013

AT 126 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED ISOLATED
THUNDERSTORMS OVER WESTERN AND NORTHERN PORTIONS OF CARBON COUNTY
IN SOUTHEAST WYOMING. THESE STORMS WERE MOVING NORTHEAST AROUND
45 MPH. WINDS GUSTS UP TO 55 MPH WILL BE POSSIBLE IN THE VICINITY
OF THESE STORMS. MOTORIST SHOULD BE PREPARED FOR SUDDEN STRONG
WIND GUSTS WERE ENCOUNTERING THESE STORMS. ISOLATED THUNDERSTORMS
AREA EXPECTED TO CONTINUE THROUGH THE AFTERNOON.

LIEBL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
322 PM MDT THU JUN 13 2013

WYZ101-103>105-109>113-132300-
CONVERSE COUNTY LOWER ELEVATIONS-NORTH LARAMIE RANGE-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-
CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS-
SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE-
UPPER NORTH PLATTE RIVER BASIN-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...MUDDY GAP...
MEDICINE BOW...RAWLINS...SINCLAIR...HANNA...ARLINGTON...
ELK MOUNTAIN...BAGGS...DIXON...SARATOGA...ENCAMPMENT...RIVERSIDE
322 PM MDT THU JUN 13 2013

AT 320 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED ISOLATED
THUNDERSTORMS OVER PORTIONS OF CARBON COUNTY...CONVERSE
COUNTY...AND NORTHERN LARAMIE COUNTY IN SOUTHEAST WYOMING. THESE
STORMS WERE MOVING NORTHEAST AROUND 40 MPH. WINDS GUSTS UP TO 55
MPH WILL BE POSSIBLE IN THE VICINITY OF THESE STORMS. MOTORIST
SHOULD BE PREPARED FOR SUDDEN STRONG WIND GUSTS WHEN
ENCOUNTERING THESE STORMS. ISOLATED THUNDERSTORMS AREA EXPECTED
TO CONTINUE THROUGH THE AFTERNOON.

LIEBL